Abstract
IN NATURE of September 29, p. 145, Dr. Orton makes the interesting suggestion that bisexuality in animals may be causally connected with the development of a freely moving, as opposed to the sessile or sluggish, habit. Reviewing the incidence of hermaphroditism and bisexuality in the animal kingdom, he reasserts the proposition put forward by Claus that hermaphroditism is found most frequently in fixed, parasitic, and sluggish animals. The two modes of reproduction may therefore be functions of the degree of motor activity manifested by animals.
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ROBSON, G. Is Bisexuality in Animals a Function of Motion?. Nature 108, 212 (1921). https://doi.org/10.1038/108212a0
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DOI: https://doi.org/10.1038/108212a0
